The newly launched Aqara U400 is the first — and so far only — smart lock with Ultra Wideband Home Key support, and after using it for the past month, I don't think I can go back.

While expensive compared to other options, support for Apple Home Key and the great design make the smart lock a winner.

This petite retrofit smart lock is a discreet choice for just about any environment, though it’s incredibly loud and its app drags. Nuki has been producing smart locks for Europeans since 2015 and is ...